Tenter clip



TENTER CLIP Filed May 27, 1932 l M f ,A 7 INVENTOR.

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Patented Sept. 26, 1933 www UNITED STATES` l'f'ATEl-YiI'i- 1,927,998.. u .y

'rEN'rERcme .101m H. williams, Providene; n. 1. Application May 27, v1932. 'serial 'm4613387 V1 claim. l(or. 26962) This invention relates to improvementsl in tenter machine apparatus and is directed more vparticularly to improvements in web engaging clips used for the chains of -tenter machines.

The principal objects of the invention are directed to improvements in tenter clips and as will further appear the novel features of the invention reside in a novel combination and arrangement of the parts whereby the clip is adapted for` 10 long life and may be manufactured at a small cost while at the same time the clip is adapted for the most efcient operation.

As is well known, a tenter machine includes a pair of endless chains formedvfrom pivoted t0- 15 gether clips adapted to engage opposite marginal zu the web rests and jaws or gates pivoted thereabove which bear on the web to hold it on the plate. In that way the web is gripped.

According to special features of this invenV tion there is provided a tenter clip wherein the jaw is provided with a web engaging plate member arranged for movements in the jaw so that the member may align with the plate or bear evenly thereon. The said member has a substang tial bearing in the jaw to support the same in a rigid manner and yet allow the'member to tilt as is necessary for the best operation of the clip.

This is accomplished by providing a substantial Y bearing between the plate and jaw to permit relaf tive movements thereof while separate means is 35 provided to hold the plate and jaw against separation beyonda certain limit of desired relative movements.

Various novel features and advantages of the invention will appear from the following description of the preferred form thereof. For purposes of disclosure the preferredform of the invention is shown in the accompanying drawing, wherein:

Fig. 1 is a side elevational View of a tenter clip embodying the novel features of the invention. y

Fig. 2 is a front elevational view of a clip jaw or gate shown in Fig. 1.

l5@ Fig. 3 is a front elevational view showing the jaw plate of the invention.

Fig. 4 is a transverse sectional View taken on the line 4-4 of Fig. 3, and

Fig. 5 is a similar View taken on the line 5-5` kReferring now tothe drawing'more in Ydetail the invention willbe fully described. I

In Fig. 1 there is shown. altenterlV clip vCrha/irig a. web Asupportingplate P for'underlyingzand sup= porting the side marginal edges of aweb.A A jaw or gate G is pivoted to arms'4 above the plate vP and is adapted to swing inwardly or to the left from the position shown'in Fig.\1.r The lower end of the jaw is adapted to rest on a web supported by the plate P and hold the web against. being pulled to the right. i

The lowerv end of the gate is slotted as at 9 throughout its length and a plate 8 which may be called a vjaw plate is carried in said slot so as to bemovable therein as will later appear.

In the manufacturing of the jaw G'the slot 9 may be formed therein by a cutter such as a ro-` tary cutter or the like. For best results the width of the slot 9 will be slightly greater than the thickness of the jaw plate member'8 so that the member 8 may move in the slot 9 more orless freely asis desired.

A curved seat 10 is provided intermediate the l ends of the slot 9 which vmay be on the radius of a circle and preferably according to the invention the Vradius of the curve will be sufficiently large to form a circular seat of considerable length relative to the length of the jaw as is shown'.

The plate 8 on its upper side has a curved or circularly formedbearing surface 1'1 of the contour to bear on the seat 10 as shown in Fig. 2.

Pins or rivets 12'carried by the jaw G, at either side of the seat v10 pass through openings 14 provided in the member 8. These pins are suitablyv held in the jaw and prevent the plate member 8 from falling from the slot 9. They'are not in-l tended as pivots for the plate 8 but merely to hold the plate 8 in the'jaw and allow the plate to move.

The openings 14 are considerably larger than the rivets or pins 12 or at least are larger than the shanks 13 of said pins so that the' ends of the" member 8 may move up and -down relative to the jaw member while the portion 11 of the plate 8 bears on the seat 10. This is so the lower edge of the member 8 may align with the plate or adjust itself to the plate and an edge of a web resting on said plate. In this way the member 8 may at all times bear on a web or the plate vthroughout its length and adjust itself to non-aligned conditions.

By reason of the curved surface ofthe member 8 bearing on the seat 10 the member 8 vmay tilt or swing while it is held by pins 12 against dropping from the jaw.

By providing the relatively long seat 10 and the relatively long curved edge portion 11 of the member 8 there is a substantial bearing support between the plate vmember and the jaw so that the no Wearing Vaction on the pins 12 and the open-k ings 14 of the jaw plate so that the construction has a life appreciably longer than a conventional type of tenter clip. Having .described the invention in the form at present preferred what I desiretoclaimand secure by Letters Patent of the United 4States is:

A tenter clip comprising in combination, a5 gate pivoted for swinging movements so itslovver edge lies above a web supporting plate, the said gatebeing providedwith a slot extending upwardly from saidvlower edge toprovide a continuous U-shaped section having frontrandrear walls and a continuous closed bottom wall for-saidslot extending from end to end of said gate, the bottom wall of the slot being provided'with a curved seat portion intermediate its ends formed'on a radius the axis of .which is located beyond' the lower 'edge of the jaw, a jaw plate movable in said slot having a curvededge portion intermediate its ends which is complementalto and adapted to bear against the curved seat portion of vthe bottom wall and having longitudinal edges at either side thereof normally out of contact with the bottom wall of the slot at either side of thek curved -l seat portion, pins passing through the front and vrear walls of said jaw extending through said slot adjacent the ends thereof at either side of. the curved seat portion of the slot and the saidY plateY being provided with openings receiving the pins which are relatively larger and ynormally out of 'contact with said pins, all adapted and arrangedwhereby the curved edge portion of the plate may bear in the curved seat portion of the bottom wall of the slot and may freely tilt in saidslot independently of said pins. l

' JHNH WILLIAMS. 

